NAME:
	gr_ri_wfc_allfields
 PURPOSE:
	Same as gr_ri_wfc but loops through all fields with XMM and WFC data
	It reads  ~xmmssc/public_html/xidops/fields_status.txt,
	and includes any fields with an xmm source list and wfc data.
	If there are more than one xmm source lists,asks the user which to use
	The Lockman hole field is not included
 CALLING SEQUENCE:
	i_gi_wfc_allfields[,infile=infile,ps=ps,gif=gif,$
	one_per_page=one_per_page]
 OPTIONAL INPUT KEYWORDS
 	infile: text file containing the file names of inputs. Default is
		~xmmssc/public_html/xidops/fields_status.txt
 OPTIONAL OUTPUT KEYWORDS
	ps,gif: if set (either, not both), outputs are ps+'1.ps' or 
		gif+'1.gif', ps+'2.ps' or gif+'2.gif'. otherwise window.
	noplot: if set, no histogram plots are produced
	one_per_page: if set as well as ps, only one plot per page
 DEPENDENCIES:
 	The necessary databases should already be made. If a database is 
	missing that field will be ignored.
 RESTRICTIONS

 CALLED PROCEDURES:
 astrolib functions
 rd_to_vector
 
 MODIFICATION HISTORY:
	24-Jan-2001  Original by Suzanne Aigrain

(See /home/xmmssc/soft/idl/pro/colplots/gr_ri_wfc_allfields.pro)